I like Xuan Xiao, so I want to give him a happy ending.
One first went through "Four Immortals", and after being banned from the East China Sea for a thousand years, he wore the shell of Su Yao and traveled to "Infinite Horror". He died saving Chu Xuan in the final battle, and ended up returning to "Four Immortals" again.
This time, Xuan Xiao and Su Yao will be happy.